221210021110100 has 36 divisors (see below), whose sum is σ = 523664449975968. Its totient is φ = 80440007676000.

The previous prime is 221210021110097. The next prime is 221210021110129. The reversal of 221210021110100 is 1011120012122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100550008496 + ... + 100550010695.

Almost surely, 2^{221210021110100} is an apocalyptic number.

221210021110100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221210021110100 is an abundant number, since it is smaller than the sum of its proper divisors (302454428865868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221210021110100 is a wasteful number, since it uses less digits than its factorization.

221210021110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201100019216 (or 201100019209 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221210021110100 its reverse (1011120012122), we get a palindrome (222221141122222).

The spelling of 221210021110100 in words is "two hundred twenty-one trillion, two hundred ten billion, twenty-one million, one hundred ten thousand, one hundred".